Torslund wrote: ↑Thu May 28, 2020 5:22 am
This stall issue when computer is disconnected, is that a software or electrical issue?
Usually electrical / hardware.
Torslund wrote: ↑Thu May 28, 2020 5:22 amEngines efficient, modern engines is better then older in efficiency. So running an older engine on program for newer engine could need more work. I have to rebuild VE and AFR table from beginning.
Correct. You will not be able to help an engine run well - of any age - without specific tuning for that engine, setup and fuel. Every individual engine is different, and so is every tune. Speeduino must be told how to run the engine, and you need to tell it. This requires understanding the basics of engine and tuning theory. The more you understand, the easier and better you will tune.
Analogies: You are a new Chef. Learn to cook and practice to make good meals. Or, you are a new musician. Learn to play your instrument and practice to make good music. My favorite - you have built a new guitar. It will sound like crap until you tune it. If you do not know how to tune a guitar, you must learn. It is not the guitar's fault if it sounds like crap. The engine wants-to and can run well. You must learn to tune it so it can do that.
Torslund wrote: ↑Thu May 28, 2020 5:22 amI see a problem when the tables is far away from basic. It's like speedy can't handle it. Something with the stoichiometric ratio handling?
Speedy can handle it fine. You need to tell it how to handle it. Stoichiometric ratio has nothing to do with tuning. It is only a laboratory reference, although often used for government emissions tuning to old regulations or old catalytic requirements. Ignore stoich for basic tuning purposes, as it is neither efficient nor powerful in most cases, and almost never appears in final tunes (except for government regulations). If after initial tuning to best efficiency and performance you need to de-tune it for emissions requirements, do that afterwards.